Chair backrest and armrest assembly



FIG. 1 is a front perspective view of a chair backrest and armrest assembly according to a first embodiment of our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view of thereof;

FIG. 7 is a front perspective view of a chair backrest and armrest assembly according to a second embodiment of our new design, the second embodiment identical to the first embodiment except that the second embodiment lacks a hole in the upper portion of the backrest;

FIG. 8 is a front perspective view of a chair backrest and armrest assembly according to a third embodiment of our design, the backrest including a cushion cover;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof; and,

FIG. 13 is a top view of thereof.

The features shown in dashed lines form no part of the claimed designs. 

The ornamental design for a chair backrest and armrest assembly, as shown and described. 